1st oil drain in 30 years! (2 Viewers)

[lostmarbles]

This thread is interesting.
I pulled off my transfer pump and about 250 or more ml of oil came out. If this oil caused the lower third of the diaphragm to be sitting in oil instead of air it would be less movement via engine vacuum to influence the spring. You'd then have less fueling. So it seems if you have an old rig you might pull the transfer pump and drain 25+ years of accumulated oil. I've yet to put it back together but I expect a power increase.
aaron

Which engine do you have Aaron and how old is it?

(Having a signature line with a good description of your vehicle is helpful to other posters.)

And by "transfer pump" do you mean "injector pump"? (But if so, why did you need to remove it in order to drain oil from it?)

Is this an old-style injector pump that has its oil independant of the engine itself and with its own oil dipstick?

A quarter of a litre of oil seems to be a tremendously large quantity to have entered the governor compartment!

I think the main problem in having excess oil in the governor housing is simply its deteriorating effect on the leather of the diaphragm (rather than the possibility of it preventing diaphragm-movement).

 

[magnus_heydoc]

1984 3B.

Transfer pump, lift pump; bolted to the side of the IP.
That appear to be what came out. A large black puddle dripped to the floor as I was swapping IP's with another of my trucks (as a test for an unrelated issue to this thread). As big as a large serving tray.

How could that amount of oil got in there?

Is the transfer pump opening lower than the little drain screw? I think I drained everything out of there and not just the excess.
My pump was not working right so hopefully this solves it.

 

[lostmarbles]

1984 3B.

Transfer pump, lift pump; bolted to the side of the IP.
That appear to be what came out. A large black puddle dripped to the floor as I was swapping IP's with another of my trucks (as a test for an unrelated issue to this thread). As big as a large serving tray.

How could that amount of oil got in there?

Is the transfer pump opening lower than the little drain screw? I think I drained everything out of there and not just the excess.
My pump was not working right so hopefully this solves it.

Oh I see..

No. That oil you drained is not from the governor/diaphragm area.

That oil should be there.

And in a 3B it'll get replenished immediately you restart your engine (because your injector pump is pressure-fed oil from your engine's oil pump).

So unfortunately I don't think draining that oil will cause any improvement.

(There must be another problem.)

 

[magnus_heydoc]

Dam you Lost! Dam you to hell!

(yeah, you know you're right eh?)

 

[o8ko8k]

just drained mine, had about 2-3 thimbal fulls. Excellent post!!! thanks for the info!!!

 

[flatlandhj]

Did the deed this weekend. About one tablespoon of oil, with most ending up under my fingernails. There is truly no nasty oil like 2H nasty oil. Couldn't detect any operational change after, but always good to learn something new. Thanks Tom.

 

[Stephen835259]

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I'm pretty sure it is the one I've circled in red.


(PS. Your pump is on the wrong side of the motor.)
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Do you know if for sure it was the one circled in red?

Steve

 

[lostmarbles]

Do you know if for sure it was the one circled in red?

Steve

99.5% certain Steve

 

[ozcrusier]

This may help

 

[lostmarbles]

This may help
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That's a really early pump where the pump oil is filled, level-checked, and changed completely separately from the engine's oil. (And that drain plug #1 is used for the for draining the IP's oil.)

I'm assuming Steve has a later-style pump (where the IP shares the engine's oil rather than having its own separate oil bath) and where he just wants to drain "oil seepage" that has gotten into the diaphragm chamber.

 

[Stephen835259]

Awesome! Thanks! Gonna try and knock it out sometime this month.

 

[kevin in okinawa]

Did the deed this weekend. About one tablespoon of oil, with most ending up under my fingernails. There is truly no nasty oil like 2H nasty oil. Couldn't detect any operational change after, but always good to learn something new. Thanks Tom.

got you beat! the oil I drained from the Aisin winch on my truck (original oil perhaps?!?) was egregiously horrid and stank like I imagine Hell would smell.

 

[Option 158]

Well I'm fussy about maintenance and I read "Owners Manuals" and even "Workshop Manuals". Yet until a recent thread on MUD, I was completely unaware that this plug on my BJ40s injector pump was there for draining engine oil that leaks through internal seals into the diaphragm enclosure (into the governor housing).

I have never found any mention of this maintenance task in any Toyota literature that I have (and I have more than most people).

View attachment 195674

So after 28yrs, I just removed this plug (10mm spanner) and watched between 5 and 10ml of dirty old engine oil drain out.

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Don't ya just love MUD!


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G'day, just did mine after finding this thread randomly, got about 40-60ml out of it, feels much smoother thou out the rev range, awesome tip. Thanks heaps 1985 2h hj60

 

[Miloslavich]

Different engine, same question- does anyone know if the 3L 2.8 Diesel (in my Hilux) has a drain on the injector pump? still relatively new to this rig